8.2.6

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8.2.6 Discuss the relative advantages and disadvantages of various energy sources.


Energy Source
 Advantages
 Disadvantages
FOSSIL FUELS
  1. High energy density
  2. Easy to transport
  3. Cost effective
  1. Global Warming
  2. Acid rains
  3. Quantity is scarce
  4. Prices
NUCLEAR
(Uranium Fission)
  1. High energy density
  2. Large reserves compared to oil
  3. No greenhouse gas waste
  1. Quantity is scarce
  2. Workers in danger
  3. H2O becomes radioactive
  4. Need place for wastes
  5. Non-renewable
  6. Ore is also radioactive
  7. Need to be careful when transporting U to power plant
NUCLEAR
(Plutonium Fission)
  1. High energy density
  2. No greenhouse gas waste
  3. Uses by-product of Uranium Fission as fuel
  1. Need place for wastes
  2. Could lead to uncontrolled reaction.
  3. Readily usable, so this could be used as a weapon
NUCLEAR (Fusion)
  1. Readily available
  2. Inexhaustible (Deuterium and Tritium)
  3. No toxic gas emissions
  4. No dangerous by-products
  1. Many countries gave up
  2. Reaction not long enough
  3. Need place for wastes
  4. Some optimal reactors require rare fuel, like He-3.
SOLAR
(Photovoltaic)
  1. Clean
  2. Take advantage of unused space (e.g. rooftops)
  3. Renewable
  4. Low/no maintenance
  1. Only used during day
  2. Cloudy day
  3. Need space
  4. More costly (compared to solar heating panel)
  5. Efficiency: ≈ 40%
SOLAR
(solar heating panel)
  1. Clean
  2. Cost effective (in the long run)
  3. Renewable
  4. Low/no maintenance
  1. Used only during the day
  2. Weather dependent
  3. Need space
  4. Inefficiency from converting solar energy
HYDROELECTRIC
  1. Cost effective (free source)
  2. Minimal pollution
  3. Renewable
  4. Inexhaustible
  1. Affect mobility of fish
  2. Formation of Scour holes
  3. Lose land and people need to move
  4. Can be disastrous
  5. Only used in those areas
  6. Supersaturation of air into water
WIND
  1. Clean
  2. Renewable
  3. Sustainable
  4. Economical
  5. Ample
 1. May be too weak
2. Yields less energy
3. Turbines are costly
4. Takes space
5. Creates noise pollution
WAVE (OWC)
  1. Predictable
  2. Strong in winter
  3. Cost effective
  1. May be too weak
  2. Suitable site needed
  3. OWC must be strong enough
Fission in general
  1. Little fuel needed
  2. Does not contribute to global warming
  1. Dangers of uncontrolled reaction
  2. Waste can be produced for weapons
  3. Costly



Sites
 Wind
Tim Kirk
Solar (Photovoltaic)Solar (solar heating panel)
HydroelectricFusion
Fission
Wave
 Wind
Hydro. 1
Hydro. 2
Hydro. 3
Fossil Fuels
Fusion 1
Fusion 2 Fission
Uranium 1 ,
Uranium 2
[pt 4 for all nuclear]
Uranium [pt 5]
Wave
Help from Mr. W
Tim Kirk
Good site for review

("Fission in general" may not be necessary)

Disadvantage PPP.pptx